Teeth sensitivity (dentin hypersensitivity) happens when the outer layer of your teeth (called enamel) wears down. This can expose the softer layer underneath (called dentin), which is more sensitive. Exposed dentin can make it painful to eat or drink something hot, cold, sweet or sour. This can happen if your gums pull away from your teeth or your enamel wears down over time. Sometimes, tooth sensitivity is a sign of a bigger problem — like a cavity, gum disease or a cracked tooth. Sometimes, tooth sensitivity goes away on its own, especially after a dental visit. But if your teeth hurt when they touch something hot, cold or sweet, talk to your dentist. They’ll look at what’s going on and suggest the best fix- fillings, scaling, fluoride varnish, suggest senstivity toothpaste / mouthwash. Best dental fillings in Santhosapuram Best dentist in Medavakkam Best endodontist in Sembakkam , Best Periodontist in Gowrivakkam Best Dentist in Vengaivasal Best Dentist in Selaiyur Best dentist in Rajakilpakkam